US Bridges

I-287 SB over Mt Airy Rd(cr 525)

Fair

Somerset County, New Jersey · 4.4MI North of 202&206 · Structure no. 1815167

Built
1968
57 years old, rebuilt 1997
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
105 ft
3 main spans
Daily traffic
56,404
2024 count
Owner
State
State Highway Agency

About this bridge

I-287 SB over Mt Airy Rd(cr 525) is a steel stringer/multi-beam or girder carrying I-287 SB over Mt Airy Rd(cr 525) in Somerset County, New Jersey. It was built in 1968 and reconstructed in 1997, so it is 57 years old, younger than the New Jersey average of 58.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 56,404 vehicles a day, roughly 9% of them trucks, projected to reach 68,823 by 2044. The structure is 105 ft (32 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-287 SB
CrossesMt Airy Rd(cr 525)
Location4.4MI North of 202&206
RouteInterstate 287
Coordinates40.68961, -74.57714
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating50 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length105 ft (32 m)
Longest span64 ft (19.5 m)
Deck width72 ft (22 m)
Roadway width69 ft (20.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56,404 (2024)
Projected traffic68,823 by 2044
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-287 SB over Mt Airy Rd(cr 525) built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1997.

What condition is I-287 SB over Mt Airy Rd(cr 525) in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does I-287 SB over Mt Airy Rd(cr 525) carry?

About 56,404 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is I-287 SB over Mt Airy Rd(cr 525)?

The structure is 105 ft (32 m) long with a longest span of 64 ft (19.5 m) and a deck 72 ft wide.

Who owns I-287 SB over Mt Airy Rd(cr 525)?

It is owned by the State Highway Agency.